Spectroscopic Investigation of the Photochemistry of Uranyl-Doped Sol-Gel Glasses Immersed in Ethanol

Sheng Dai; D. H. Metcalf; G. D. Del Cul; L. M. Toth

doi:10.1021/ic9604066

Spectroscopic Investigation of the Photochemistry of Uranyl-Doped Sol-Gel Glasses Immersed in Ethanol

Sheng Dai, D. H. Metcalf, G. D. Del Cul, L. M. Toth

Chemical Sciences Division

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Abstract

Uranyl ion (UO₂²⁺) has been doped in silica glasses through a sol-gel process. The photochemistry of UO₂²⁺-doped glasses immersed in ethanol solution has been investigated. Our experimental results indicate that UO₂²⁺ in this system can be photochemically converted to U(IV) species, and evidence is provided for the possible formation of U(IV) species via a subsequent chemical reduction of the intermediate UO₂⁺ instead of the conventional bimolecular disproportionation reaction. The latter mechanism is known to be a dominant mechanism for the photochemical reactions in homogeneous solutions.

Original language	English
Pages (from-to)	7786-7790
Number of pages	5
Journal	Inorganic Chemistry
Volume	35
Issue number	26
DOIs	https://doi.org/10.1021/ic9604066
State	Published - 1996

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title = "Spectroscopic Investigation of the Photochemistry of Uranyl-Doped Sol-Gel Glasses Immersed in Ethanol",

abstract = "Uranyl ion (UO22+) has been doped in silica glasses through a sol-gel process. The photochemistry of UO22+-doped glasses immersed in ethanol solution has been investigated. Our experimental results indicate that UO22+ in this system can be photochemically converted to U(IV) species, and evidence is provided for the possible formation of U(IV) species via a subsequent chemical reduction of the intermediate UO2+ instead of the conventional bimolecular disproportionation reaction. The latter mechanism is known to be a dominant mechanism for the photochemical reactions in homogeneous solutions.",

author = "Sheng Dai and Metcalf, {D. H.} and {Del Cul}, {G. D.} and Toth, {L. M.}",

year = "1996",

doi = "10.1021/ic9604066",

language = "English",

volume = "35",

pages = "7786--7790",

journal = "Inorganic Chemistry",

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publisher = "American Chemical Society",

number = "26",

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T1 - Spectroscopic Investigation of the Photochemistry of Uranyl-Doped Sol-Gel Glasses Immersed in Ethanol

AU - Dai, Sheng

AU - Metcalf, D. H.

AU - Del Cul, G. D.

AU - Toth, L. M.

PY - 1996

Y1 - 1996

N2 - Uranyl ion (UO22+) has been doped in silica glasses through a sol-gel process. The photochemistry of UO22+-doped glasses immersed in ethanol solution has been investigated. Our experimental results indicate that UO22+ in this system can be photochemically converted to U(IV) species, and evidence is provided for the possible formation of U(IV) species via a subsequent chemical reduction of the intermediate UO2+ instead of the conventional bimolecular disproportionation reaction. The latter mechanism is known to be a dominant mechanism for the photochemical reactions in homogeneous solutions.

AB - Uranyl ion (UO22+) has been doped in silica glasses through a sol-gel process. The photochemistry of UO22+-doped glasses immersed in ethanol solution has been investigated. Our experimental results indicate that UO22+ in this system can be photochemically converted to U(IV) species, and evidence is provided for the possible formation of U(IV) species via a subsequent chemical reduction of the intermediate UO2+ instead of the conventional bimolecular disproportionation reaction. The latter mechanism is known to be a dominant mechanism for the photochemical reactions in homogeneous solutions.

UR - http://www.scopus.com/inward/record.url?scp=0000708345&partnerID=8YFLogxK

U2 - 10.1021/ic9604066

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M3 - Article

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EP - 7790

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 26

ER -

Spectroscopic Investigation of the Photochemistry of Uranyl-Doped Sol-Gel Glasses Immersed in Ethanol

Abstract

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